江苏盛夏出现的凉伏与酷暑及环流分析

定义出低温凉伏与高温酷暑的标准 ,统计分析出现的年份和时段。分别合成低温凉伏与高温酷暑年 7月下旬— 8月中旬 50 0hpa高度场。对比两环流场 ,得出特征差异。追朔主要系统前期演变过程 ,为预测提供有意义的线索。

The Cool and Hot Days and Its Circulation Analysis of Mid-summer in Jiangsu

The article defines the standards for low temperature and c ool summer as well as high temperature and heating summer.The year and period of time that the phenomena occurred are analyzed.The height fields 500hpa level of the third ten-day in July to the second the-day in August in that year are comb ined.Comparing with two circulation fields,the specific difference is achieved b y analyzing the changing process of main system during its earlier period and im portant information for weather forecast can be obtained.